#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<unistd.h>
#include<sys/stat.h>
#include<sys/types.h>
#define ARGS_CHECK(argc,num){if(argc!=num){fprintf(stderr,"error args!\n");return -1;}}
#define ERROR_CHECK(ret,num,msg){if(ret == num){perror(msg);return -1;}}
